Improvement in middlings-purifiers



FFIC

ATENT KILIAN SCHWAB, OF LEBANON, ILLINOIS.`

IMPROVEMENT IN MIDDLINGS-PURIFIERS.

Specification forming part of Letters Patent No. 163,030, dated May l1, 1875 app-licationled January 13, 1875.

To all whom it may concern:

Be it known that I, KILIAN SCHWAB, of Lebanon, St. Clair county, and State of Illinois, have invented an Improved Middlings- Separator, of which the following is a specilication This invention relates to the peculiar arrangement of air-chambers with relation Ato the fan, by means whereof a continuous circulation of air acts upon the middlings in their passage to and from the separators, the air returning to the fan-case, while the off-al is permitted to drop into conveyer-chamber, to be thence passed out of same, and as will now more fully appear.

Of the drawings, Figure 1 is a sectional elevation; Fig. 2, an end elevation; Fig. 3, afront elevation; and Fig. 4, a top-plan, and Fig. 5 a detail, view.

A is a suitable frame that incloses the separators proper, as shown. Top of the frame A I provide a sieve, B. This is in sections-that is, so as to have silk or wire-cloth, which is of varying flneness, to form different sets of sieves. Thus the cloth b is finer than that of 111, (see Fig. 4,) the next stillcoarser than the following, 8vo., according to the size of the machine. As here shown', the sieve B has two sets of sieves, b b1, corresponding to the sets of separators, as here shown. Each sieve passes its separations to distinct hoppers b2 b3, which are in the sieve-boxing, and divided from each other, as shown in Fig. l. The sieve B, thus made, rests upon upright springs b4, which are properly secured top of frame A. (See Figs. 1, 3.) Thus suspended, said sieve receives a reciprocating movement from the same power source that operates the fan, also conveyer,

and which said parts are arranged as follows: At one end of the machine is the additional upright frame O. (See Figs. 2 and 4.) In said frame Gis the power-shaft. This is operated from power source as usual. On the shaft c is the eccentric c1, operating in the yoke c2, which is attached to one end of the sieve B. (See Figs. 1 and 2.) By means of the operation of the eccentric, the sieve B is reciprocated, or has a to-and-fro movement, for the purpose of separating the iiner parts or substances of middlings from the coarser. From each set of sieves the middlings are dropped into the farther distinct hoppers b5 bs, and Ifrom these the middlings in their passage to the separators, or from one separatingchamber to another, as will hereinafter appear, are subjected to the air-blast derived from the fan. The arrangement of the fan, therefore, with relation to the separators is as follows: Top of the machine 'is the fan-case D. This,

as usual, contains a revolving fan, operated 4, establishes return communication of the blast with thefan-case D. The current'of air, by the action of the fan, is, therefore, as indicated by the arrows, Fig. 1, viz., being a continuous circulation down one side, along bottom, and up the opposite sides of the machine, returning in the direction of the arrows, over and between the separators, by means of the chamber D4, into fan-case. By thus making the air-blast a continuous circuit, utilizing the same air, the return communication, byits suc tional force, the better enables the blast to separate the middlings, and at same time the suction-blast carries with it into the fan-case all the impure stuff, dirt, and lighter particles, to be finally settled, deposited, and carried off in the conveyer chamber D2; the chamber D2 having a revolving conveyer, D5, operated byusual beltingconnections from power source, (see Fig. 2,) for the purpose of discharging the offal, as desired.

The result of middlings fed from the hopper b5, and separated by the air-blast, first drops into a separating-chamber,E; further, whatever middlings passes over said chamber E is lodged into the discharge-chamber E1, and both-of which occupy part of the first series on the division-board a. (See Fig. 1.)

' The chamber E is a separating-chamber* that is, whatever middlings by gravity it receives can be still further separated; there fore said chamber I construct as shown in Fig. 1,r having at bottom a discharge-opening, e, through which the middlings pass, and in doing so are further subjected to air-currents, which produces the separation, the purified middlings thus resulting dropping into the first lower chamber E3, while the residue of middlin gs carried over said chamber is deposited into the second lower chamber E3, both of which occupy part of the second series of separators, which can be provided top of the' division-board a. (See Fig. 1.) During the process of separation the impure stuff, 85e., is carried with the air-current into conveyer, as before stated.

Instead of, as here shown, having but one separating-chamber,.like E, the vertical series of these (and correspondingly all the rest) can be as many as deemed practicable; the last of which, however, at bottom, should be made a similar discharge-chamber to that of E3, so as to effect a discharge of the grade or quality of middlings thus achieved.

The middlings, purified, from the separator E are, therefore, dischargedout of the chamber E3, this being made a discharge-chamber by having a slanting board, el, the inclination of which extends from near the top, at.rear of the chamber, to the lowest point of the front thereof, (see Fig. 1,) the discharge taking place out of the opening closed by the hinged `valve e3. (See Fig. 3.)

The chamber E1 is a similar constructed discharge-chamber to that of E3, and discharges its grade of middlings out of the Valve-opening e3, Fig. 3; likewise, the chamber E3 discharges separately out of the valve-opening e4, Fig. 3.

Each ofthe separators aforesaid I provide with a movable slide, e5. (See Fig. 6.) This slide has an elongated slot, so as, when fastened, the slide can be adjustably operated. The slide is fastened to the chambers in positions shown in Fig.v I. The operator, by raising or lowering the slide, can control and regulate the blast, as is apparent; also, by opening or closing the slide more or less, a particular quality or kind of separated middlin gs can be had in any of the chambers afore- Said.

The chambers described can be further duplicated and arranged as follows: Alongside of the chamber E1, and in line with the second feed-hopper b5 and set of sieve b1, is a similar constructed separator,E14, to that of E. Immediately under that of E4 is a discharge-chamber, E5, or again duplicated by E5 and E7, and nally by simply discharge-chambers E8 E9, as shown in Fig. 1.

The blast acts upon the middlings that pass 'from hopper b5 into the separator E, and out `final chambers E8 E9 being discharged out of each, respectively.

The chamber E4 E5 discharges its grade of middlings out of opening closed by valve e5, and those of E5 E7 out of opening closed by valve e7, and E8 E3 out of openings closed by valves c3 and e3, all said valves being shown in Fig. 3.

For finemiddlings the separation produced in passing middlings from the chamber E out of E3, or in connection therewith those of E E3., is sutlicient; vbut for coarser middlings, the further arrangement of separators and chambers, as here described and shown, is deemed best and most effective to divide the middlin gs into different grades, qualities, and separations.

The operator, by raising the slide most contiguous to the separators E4 E5, can prevent any middlings fed from the hopper b5 from mixing with the middlings fed. fromthe hopper 126.

My machine, by the combination of the different sets of sieves, the continuons blast, and the conveyer with the separators, arranged as shown, more practically and satisfactorily purifies middlin gs and similar fine-grain substances, and in this respect is an improvement to that patented by me,.No. 147,797, dated February What I claim is- In combination with the separators, the fan and its case D, air-chambers Dl D2 D3 D4, and conveyer D5, all constructed and. arranged to operate substantially in the4 manner and for the purpose set forth.v

In testimony of said invention-I have here- `unto set my hand in presence of witnesses.

KILIAN SCHWAB.v Witnesses:

CHRISTIAN MUELLER., SEVERIN E. MoLL.v 

